i'd like to be able to map the effect presets button to change presets the way you change blend modes.
or even something like hover + keys, or hover + scroll [maybe even with a modifier].
in res 3 you could change presets with up and down arrow keys, i liked that.

It's not so much performance, but stability and UX. Changing a single parameter continuously is very safe. Recalling a preset, that is not guaranteed to exist on disk anymore, for potentially dozens of parameters, that may have their ranges changed, if they even still exist at all, is the opposite of safe